Southern California -- this just in

Four fatal shootings in Willowbrook, Maywood and Baldwin Park

Four fatal shootings in Willowbrook, Maywood and Baldwin Park were among several homicides in L.A. County over the weekend.

A 66-year-old man was shot and killed on the sidewalk Saturday outside a Willowbrook residence known for hosting cockfights, a coroner’s official said today.

Luis Flores of Los Angeles got into an argument with another man about 2:40 p.m. in the 2000 block of El Segundo Boulevard, according to the Los Angeles County Sheriff’s Department.

"Apparently the argument escalated with both men producing handguns and they started shooting at each other," said Deputy Derrick Thompson.

Flores died at the scene, authorities said. The suspect, who fled, is believed to have been injured in the gunfight.

About an hour later in Willowbrook, in an unrelated incident, a man was shot and killed in the 2500 block of East 132nd Street, authorities said. The man was standing on the sidewalk with two other men about 3:45 p.m. Saturday when a car pulled up and someone inside the vehicle "began firing an assault rifle at the group," according to the Los Angeles County Sheriff’s Department.

The two other men standing on the sidewalk were not hurt in the attack, the Sheriff’s Department said.

In Maywood, a man who was standing with his family in the front yard of a home in the 3700 block of East 55th Street was shot and killed about 8:30 p.m., according to the Sheriff’s Department.

"They heard gunshots, and then the victim fell to the ground," the Sheriff’s Department said. He died later at a hospital.

About 6 a.m. in Baldwin Park, authorities said a man was shot and killed in the 3700 block of Foster Avenue.